Clinically, there is no precise regulation on the dosage time of Wu Ji Bai Feng Wan, so it can be taken on an empty stomach or after meals. Wu Ji Bai Feng Wan is composed of Wu Ji, Deer Antler, Bai Shao, Chuan Xiong, Radix Rehmanniae Praeparata, Radix Angelicae Sinensis and other medicines, which are effective in tonifying Qi and nourishing blood, regulating menstruation and stopping leucorrhoea (regulating menstruation and reducing abnormally increased leucorrhoea), and can be used for treating lethargy, fatigue, menstrual irregularities, menstrual cramps, abdominal pains, and coldness and pains of the lower abdomen resulting from weakness in Qi and blood. This medicine is administered orally twice a day. However, there is no strict regulation on the time of using the medicine, and it can be taken on an empty stomach or after meals. The adverse effects of this drug are not clear, pregnant women should not take it, and should not use this drug when you have a cold. If you need to use the drug, you should be under the guidance of a doctor, not unauthorized use of drugs.